Portable wireless speaker



FIG. 1 is a perspective view of a portable wireless speaker showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines are for the purposes of illustrating portions of the portable wireless speaker and form no part of the claimed design. 

CLAIM The ornamental design for a portable wireless speaker, as shown and described. 